Sinkhole risk in Treasure County, MT: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: 0%
At or near the surface: 0%
Buried under cover: 0%

What to do about a house in Treasure County

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 978 square miles, under one square mile of Treasure County maps onto soluble rock. With about 739 residents (1 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 242 map points about 2.0 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Treasure County

The nearest county rated sinkhole country is Fall River County, SD, about 278 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Rosebud County, MT 29 mi east · 0% at surface
Yellowstone County, MT 52 mi west · under 1% at surface
Big Horn County, MT 58 mi south · 11% at surface
Musselshell County, MT 59 mi west · 0% at surface
Garfield County, MT 73 mi north · 0% at surface
Petroleum County, MT 78 mi northwest · 0% at surface

Against the rest of Montana

Treasure County ranks 54 of 56 in Montana for soluble rock at the surface, and sits above 0% of US counties on that measure.